Plague bacteria

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Plague bacteria

Plague bacteria. Light micrograph of Gram- stained Yersinia pestis bacteria. This bacterium is the cause of bubonic plague (generally agreed to have been the Black Death of the Middle Ages). The bacteria are rod-shaped, Gram-negative, non- motile bacilli. Y. pestis is primarily carried by fleas on rats. Transfer to humans occurs when the fleas feed on human blood. Infection is rapid, causing swollen lymph nodes, and leading to septicaemia and pulmonary infection. Extensive control measures against rats and their fleas have eliminated plague from Europe, but it still occurs in other regions of the world. Magnification: x1450 when printed 10cm wide

Science Photo Library features Science and Medical images including photos and illustrations

Media ID 6285334

© CNRI/SCIENCE PHOTO LIBRARY

Bacteria Bacterial Bacteriology Bacterium Black Death Bubonic Plague Disease Causing Gram Negative Infectious Micro Organism Micro Organisms Microbe Microbes Pathogenic Pneumonic Plague Septcemic Plague Stained Yersinia Pestis Light Micrograph Micro Biology Pathogen

EDITORS COMMENTS
This print showcases the infamous plague bacteria, Yersinia pestis. Known as the cause of the devastating bubonic plague, which was famously referred to as the Black Death during medieval times, this Gram-stained image reveals rod-shaped, non-motile bacilli. The primary carriers of this bacterium are fleas that reside on rats. When these fleas feed on human blood, transmission occurs rapidly and leads to swollen lymph nodes, septicaemia, and pulmonary infection. While extensive control measures have successfully eradicated plague from Europe by targeting rats and their fleas, it still persists in other parts of the world. This powerful visual representation magnified at x1450 when printed 10cm wide serves as a reminder of both our triumphs against infectious diseases and the ongoing battle against them. The field of bacteriology has greatly benefited from studies on pathogenic microbes like Yersinia pestis. By understanding its gram-negative nature and disease-causing abilities through techniques such as staining methods like Gram stain used in this image capture; medical professionals can better combat similar pathogens today. Science Photo Library presents this remarkable photograph for educational purposes only - not for commercial use. It offers a glimpse into the microscopic world where dangerous microorganisms lurk while highlighting humanity's progress in combating deadly diseases throughout history.

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